Type-writing machine.



L. R., ROBERTS.

TYPE WRTTNG MACHINE. APPLIUATIOHHLED MARJO, i913.

Patented Sept. 15, 1914.

3 SHEETS-SHEET l,

IN VENTURI W @mar WITNESSESI ATTO EY L.. R. ROBERTS. l TYPE WRITING MACHINE.

APPLICATION FILED 1515.11.10, 1913.

Patented. Sept. 15, 11914.

3 SHEETS-SHEET 2.

WITNESSES:

, Mmm" L. R. ROBERTS.

' TYPE WRITING MACHINE.

AYPLIGATION FILED Mmm), 191s.

Iatentfed Sept. 15, 1914.

3 SHEETS-SHEET 3,

INVENTUM -Y Q, w

ATTORNEY sol-sro,

Speoceton o' Letters Peten-t.

dei United. Se5es, residing in Hueber? oe, the sonnig-y of Begeo end El )fesse-f', osve sveoed ce ovemen's in Typei, o: which the foowmg; is

es io powesopere'ed om y ae'amed meehssm fos ei'emg '/pe bets,

fee mve exon provides e coesvbructlon 1n which the yles bers may be actuated or sewer svooed single d selective ese Lgf' the seremos of *Joe key levei` imo possi-lon so be o -efl of; the mo- J Y eos, end in torio eotuse 1e type bess. The

leeesed bV `the operation of belowsto oe opelated and rotate the driver to tnio'y the lfed be? forward Vand! actuete the type bus. looking latch holds the key level' in operated position and the bar lifted unl le pneumetlo has operated the ber,

'which opefsigion releases seid letchend permis ne key ever am?, ber Jano be esto'e so mnlel position, y I .'fgher sees-uses and edfenteses will hereine el appese. n' in le ecemjsnymg drawings, Figure l j 1s e sespeelve View lustretng the pneumeicely operated power meohemsm for aol'etng ehe eype bers. Fig. is demil :View of A@he 'psv-7l and lootche; mechanism. Fig'. e seeiom eevatoli View of the mechanism shown in l e115@ the @new metio meohnsm, and sise shows the reetion oi Ipe bers and keys to the actuating mechanism? ehe parte being in their' nor- Fgs. e, and 6 are mal posfzons o resi. fews similar 'to 3, but showing the pests in eren; positions assumed successvoy during the eonmion of e type ber. shows ehe poss-bios of the parts 'eelfl a key leve has been dep'essea, Tous before the power device comes imo operation. 5 shows ehe position of nhe ports when e type bm' is in en inermedete position during its pntng smoke. Fig. 6 Shows the goson of the ps1-s et the instant the zfgf'pe bei? has col'npleef fss priming sgroke. Finger keys l ere provided et lle fo-rf wmf@ ends oi' key levers 2 moest-ed one pvot sod 3 which is normally heid against e. stop #i by; means of springs 5. The 'rear ends the kof; levers extend ieee o1 hough 'ical oee or oy means spring' 14. v' 'el 4" is pswv ,I

slots or ker'fs if which t" e reel" ends the arms ese guided. @side pins 011 ms 16J find 17, oose respecevely voeow above the elfios l3 seveto guide the epds of seid arms he e subsiganetly 'horizoncal dleeigion. .The selstlve a'rzjepgement, form sod poszloe o?? the'typegdars, ams 13 erating bar 22.

. upward movement being positioned behindy and associated parts may be the same as that shown in Fig. 7 of my coepending ap-v plication above referred to, No. 749,297.

Each type bar and its actuating arm 13 are lockedin their normal position 'of rest by means of a locking pawl 18, pivoted at 19 in a slot 15, and held in locking position by gravity assisted by a spring 20. The pawl is formed with a nose 21 which seats in a cor-- responding notch in the free end of the arm 13.v

Between each key lever and the corresponding arm 13 is a vertically disposed op- These operating bars are formed with upper and lower o enings 23 and 24 respectively, through which extend supporting and guiding rods 25 and 26 mounted in supports 27. These supports may be in the form of ribs formed on the plate 7 said ribs havingL slots in alinement with the slots 6 and 15. The openings 24 are inthe form ofvertical slots which permit a free vertical movement of the bars 22, and also permit the bars to be tilted forwardly about the rods 26 as a fulcrum. The openings 23 are'of such size and shape as to permit aufree vertical and .tilting o r trans-` verse movement of the bars. L

lVhen a key 1 ,is depressed, it throws the corresponding bar 22 upward tothe position shown in Fig. 4, and releases the locking pawl 18 so that the type bar is free to be actuated, the upper end of the bar 22 by such the arm 13 for actuating the latter and throwing the type bar upward to printing position when' the bar 22 is thrown forward, as hereinafter set forth. I

When a linger key is depressed, it is locked in such position by a lever or latch 28 piv. oted on a universal rod 29, and formed with a shoulder 30 whichis carried beneath the end of the key lever by a spring 31, whereby the bar 22 set by the key lever is held up until it is actuated by the rotary driver.

The type bars are operated by power supplied by pneumatic mechanism comprising a bellows 32 and valve mechanism controlling the supply-and exhaust of air to and from the bellows. A pipe or passage 33 extends rom the bellows to a valve chamber 34 in which is located a vertically movable valve 35. The valve 35 is normally seated by gravity and closes a valve port or opening 36, 'which forms a communication between the valve chamber 34 and an exhaust chamber separated by a diaphragm38 into upper and lower compartments 37 and 39. An exhaust pipe 40 comprises branches 4l 'and 42 communicating with saidupper and lower compartments 37 and 39 respectively. Theexhaust-pipe 40 leads to a vacuum pump or vacuum chamber, whereby the air is norrr'ially` exhausted from the compartments 37 again inflate the bellows.

Aand 39. A pipe 42 leads .trom the compartment 39 to a valve 43, pivoted at 44 to a stationary support, and adapted to be lifted by a spring 45 into position to close the pastionary pivot 52. A tail 53 ofthe valve 43,

in the path of the lever lisstruck by the lever and opens the valve 43. This admits atmospheric pressure through the pipe 42 into the compartment 39. Theunbalanced pressure thus produced on the diaphragm 38 lifts the valve 35 to open the port 36, and also causes the upper end of 'said valve to close a port 54 opening from the valve chamber 34 to the outside air. The port 36, being opened', permits the air to be exhausted from .the bellows through the passage 33, 34, 36, 37, 41 and 40. The passage 42 is sufficiently restricted to prevent the pressure in the compartment 39 being reduced enough during the operation of the bellows to allow the valve 35 to drop.

When the valve 43 has again been closed after the operation of the bellows, a partial vacuum is produced in compartment 39 reducing the pressure on the under side of the diaphragm 38, and permittin the valve 35 to move downward toits-initial position; this movement being assisted by the atmospheric pressure at the upper side of the valve. The port 54 being thus opened and the port 36 closed, air will enter port 54 to A pin-hole or bleed-hole 55 in. the diaphragm 38 serves to quickly establish a balance ot' pressure on y opposite sides of the diaphragm when the valve 43 is closed.

The bellows is connected through a link 56 to a. lever 57 secured to a rock shaft 58 which may be journaled in the frame of the machine. A pawl 59 connected by a pivot 60 to the lever 57 is adapted to actuate a ratchet wheel 61 secured to an axle 62 of a rotary driver shown in'the form of a reel. This reel comprises a series ohorizontal rods 63 equally spaced and symmetrically arranged with respect to the axle 62. The ends of the rods 63, as shown in Fig. 1, are secured to a spider 64 'to which is also secured the axle 62.- At intermediate points the driver may be provided with one or more plates 65 to properly space and rigidly hold the rods 63 in position.

The ratchet wheel 61 is formed with ratchet teeth 66 corresponding in number and p'si- 7. In a typevvriting machine, the combination of key levers, type bars, a Wind motor, a rotary driver' rotated by the motor to actuate the type bars, and to reset the mo-l tor for a subsequent operation, and locking latches for the key levers set by the operathereby, a mechanical connection nation of a bellows, a lever, a link bet-Ween.

the bellows and lever, ,a pavvl carried by the lever, a ratchet-wheel engaged by the paw/1,

a rotarydriver having an axle to which said ratchet-Wheel is secured,said driver comprising parallel spaced bars, type bars, selective devices movable into position to transmit motion from the driver to the type bars, and

l means to operate said selective devices.

l0. I-n-a typewriting machine, the combination of a bellows, a valve controlling the operationl ofthe bellows, a key lever, a type bar, a rotary driver to actuate the type bar, paWl and ratchet mechanism-for transmitting motion from the bellows 'to the said driver for aetuating'the latter, and mechanism operated by the key lever opening said valveiand thereby effecting the op eration of the bellows.

11. In a typewriting machine, the combination of a bellows, a valve controlling its operation, a key lever, an operatino bar set Irom the v operating bar to said valve for operating the latter, a type bar, arotary driver for trans-- mitting motion through said operating har to the type bar, and. mechanism operatedby the'bellows t'o impart a step-by-step rotation to said driver.

12. In a typevvriting machine, 'the combi-n nation of type bars, key levers, operating bars supported on said key levers, a pneumatic motor, a valve controlling the motor, a universal bar adapted to be operated by each of the said operatin bars, means cperate'd by said universal ar for operating the valve and thereby ei'ectin the operation of the motor, and means to se ectively transmit motion from the motor through said operating bars tothe type bars.

13. In a typevvriting machine, the combination of type bars, selective devices to operate the type bars, a rotary driver to actuate said selective devices, a pneumatic motor controlled by said selective devices and operative to impart a -step-by-step rotationV to the driver, manual means for setting said selective' devices, and 'means to individually lock said selective devices` in set position.

14. In a typewriting machine, the combination of t pe bars, a rotary actuating den vice, a Windyomotor, keys, devices selectively set by said keys into position to transmit motion-from said rotary device to the type bars independently of said keys, operating connections between said motor and rotary device, a valve operated by said keys to control the operation of the motor, and means to lock each key in operated position, said locking means released by the operation of said rotary device.

15. In a typewriting machine, the combination of a rotary driver, selectivel op- -erable devices settable into position to e operated by the said driver, keys to set said devices, pneumatic mechanism to operate the driver, type bars, intermediate operatin mechanism between said devices and sai type bars, and locks for the keys released by said operation of said `selective devices.

16. In a typewriting machine, the combi'- nation of type bars, a rotary driver, pneumatic means to operate the driver, mechanism to transmit motion from the driver to the type bars, keys controlling said mechanism, and means to lock the keys in operated position, said locking mea-ns released by said transmitting mechanism.

17'.. In a typewriting machine, the coinbinaticn of key levers, type bars, a rotary driver, a pneumatic motor, connections betvveen the motor and driver, a valve operated 'by the key levers to effect the operation-'0f said motor', selective mechanism set by the keys and actuated by the driver to transmit power to the type bars independently of the key levers and thereby operate the type bars corresponding `to the operated key levers, and means to lock said selective mechanism in set osition until actuated by the driver.'

`18. n a typevvriting machine, the combination of a rotary driver, a pneumatic motor, operating means between the motor and driver, a set of type bars, keys, operating bars selectively settable by the keys to trans-l mit motion from the driver to the type bars, and means to prevent the restoration of tle operating ba'rs to initial position before the corresponding type bars have been operated.

19. In atypevvriting machine, the coinbination of types, operating bars, a rotary driver, means to selectively set the operating bars in the path of said driver, pneumatic mechanism to impart a step-by-step rotation to the driver to drive the set bars and thereby operate the corresponding types, and latches to prevent the return of the set bars, said latches released by the bars when the latter are operated by the driver.

20. In a typewriting machine, the combination of type bars, selective devices, means Sil .n in gli: Y

tently' operates (iriver controlleii by seid setting ineens to activite seul. devices51 thereby openite the type he. s

eas-zeil. ey tte means for' seicl. device ation oil device-s to'opei'ste the. bers. i

ln 2i typeiviting inecliiiic7 the sonihinetion of type hei-S7 iingeeleys7 devices selectively opeiaiole hy the lieys i1 to positions to forni e power: tibzinsniittiiig inecliiini,

means to lool; seid devices in seid ositions and power mechanism brought into activity by the operation ci seid liz-sys to sziicl devices when thus iociiecl fi tnei'ehy cinte the type here, e l ninticiilliI ieleasecl permitted to in t, hination of f selectively V position to forni operators to? the type power inech. for cti-:lying esiti opei' tors, incl ni to loci; eech operated position the hey ievei leased by sicl opeietois i driven by the lptfivei' niecnao'iisinu 24. ln ,e typeiviiting machine, the com hination of key levee, ineens to loch: seid lever when operated, en operating (levies set by the opeietion of the liey leves?, poi' mechanism to ii'ive clevice, sin bar operated hy cle-'vice2 the ey being' eutonieticelly ieleesetl by the vice when the lette? is diiven hy pov/ei: mechanism. Y

25. ln a typewriting machine, the conihination oi e key lever., an opeieiting hei set thereby, ineens to' lock said levee enel her in set position, a type loer, and power mechenism operable through seid opeiating bei to actuate the type 'bar and ysinonltaneonsly release the key lever. y Y

QG. In s typewriting machine, the coinbinetion of a type bei', en arm connected thereto, a key lever, an operating bei in position to hel-iftecl hy seid level', a locking latch to hold the lever and said-operating bei' after the letter' is liftechend power mechanism to drive seid operating bei' in n trensvese direction and 'thereby operatel said sim and type bei', seid looking latch ASie-ing iettei sie being in position toeloe released by .said

eiitoinoticellv relee'secl `when operating nziiysnppoite voted intci'inetliet Y sii i :ipted to heil Y ,eci tl eiovz7 s, letcli 'er in operated position? power niechf-inisin for diiving imi' in s, transverse clii'cction9 enel i te: mit the' transverse in opciati? imi' to the type :ictimte type hoi to T i seid letcii being posi lone i bei flni'ii unil inse. to

30. s "1 iiination of L hei oneiuti-ng cief'ic'l devices into position cli'ivei, mechanism to ii the driver, o, inotoi to ope inechwinisi'n,1 :incl :i ioclzine; latch sitio, Cievices ntonieticelly set vice is inoyecl to epeizitive goe' oper-steel. liy the driven ln e typewrituingf" inseiii nation oi type'loeis e. moto?, e mechanically operate:I by se actuating the type here, devices con the operation o the motor.'i keys to set ldevices and ineen-s to lock seid device set position, sai locking; ineens i'eleesec. the opeetion oi3 the ioteiy driver.

32. ln e typewiiting machine, the conf nation of en intermittent-ly operated elli i e inotoi to operate the cli'ivei', type loe-ifs, mechanism to operette seid. heis opeietecl by the driver, keys to set esiti meshesist@a :incl ineens tolocli seid mechanism in position until operated; by the diiver.

33. ln a, typewiiting mechinehthe cenil nation with type here and key leveis7 oi individuel locking latches foi' seid key levers to l1-old them in opeietefl position, ansi, ji ineens controlled by the operation et' the key 'leveis to ectuete the type hais 3l. ln e typewriting machine, cembination with key levers, of spring-actuated latches to automatically engage said levers and hold them in operated position, type bars, and power mechanism controlled y the key levers for actuating the type bars,

-levers and lifted thereby to operative psition, a motor to drive said operating bars, and operating mechanism between said 0perating bars and the type bars, said latches being in the path of the said operatin bars and actuat thereby to release the key evers when the operatingwbars are driven by -the motor.

R. ROBERTS Witnesses J. A. BROPHY, F. E. ALEXANDER. 

